const https = require('https');
const SQLHelper = require('./SQLHelper')
const { formatTime } = require('./util')
///雪花算法生成id
const snowflake = require('./snowflake')
module.exports = function(app){
    ///登录拦截中间件
    function loginRouter(req,res,next){
        let token = req.headers.token
        if(token){
            SQLHelper(`select * from session where id = ${token}`).then(ret => {
                if(ret.length){
                    let session = ret[0]
                    req.session = {
                        userId:session.userId,
                        userName:session.userName
                    }
                    next()
                }else{
                    res.status(406).send({errorMsg:'当前用户未登录'})
                }
            })
        }else{
            res.status(405).send({errorMsg:'缺少token，请先进行登录'})
        }
    }
    ///让初登陆以为的所有小程序接口都先验证登陆
    app.use('/wx',loginRouter)

    ///微信登录
    app.get('/wxlogin', (req, res,next) => {
        let code = req.query.code
        let appid = 'wx1c6c58dc411118fd'
        let secret = 'bc35f5a624f8e348a6d41cad72526ab0'
        https.get(`https://api.weixin.qq.com/sns/jscode2session?appid=${appid}&secret=${secret}&js_code=${code}&grant_type=authorization_code`, (ret) => {
            ret.on('data', (ret) => {
                ret = JSON.parse(ret.toString())
                let openid = ret.openid
                if(!openid){
                    res.send({errorMsg: ret.errMsg || '获取openid错误'})
                }else{
                    ///查询用户是否已经注册
                    let queryMember = `select * from member where openId = '${openid}'`
                    SQLHelper(queryMember).then(membersRet => {
                        if(membersRet.length){///用户已经存在
                            ///挂载到req
                            req.member = membersRet[0]
                            next()
                        }else{///用户不存在,使用openid注册用户
                            SQLHelper(`INSERT INTO member(openId) VALUES('${openid}')`).then(newMember => {
                                ///注册成功返回新用户信息
                                SQLHelper(queryMember).then(newMember => {
                                    ///挂载到req
                                    req.member = membersRet[0]
                                    next()
                                })
                            })
                        }
                    })
                }
            });

        }).on('error', (e) => {
            console.error(e)
            res.send({errorMsg:'获取openid错误'})
        });
    },(req,res) => {
        let member = req.member
        let token = snowflake()
        ///缓存token到session表
        SQLHelper(`
        INSERT INTO session(id,userId,userName,inTime,platform) 
        VALUES(${token},'${member._id}','${member.nickName}','${formatTime(new Date())}','wx')
        `).then(ret => {
            res.send({
                nickName:member.nickName,
                token,
                openId:member.openId,
                avatarUrl:member.avatarUrl,
                _id:member._id
            })
        })
    })

    ///修改用户信息
    app.put('/wx/member',(req,res) => {
        ///
        let userInfo = req.body
        console.log(userInfo,req.query)
        SQLHelper(`
        update member 
        set nickName = '${userInfo.nickName}',avatarUrl = '${userInfo.avatarUrl}'
        where _id = ${req.session.userId}
        `).then(ret => {
            console.log(ret)
            res.send({})
        })
    })

    ///获取收获地址列表
    ///memberId 用户ID 必填
    app.get('/wx/address',(req,res) => {
        if(req.session.userId){
            SQLHelper(`
            select * from address where state = 1 and memberId = ${req.session.userId}
            `).then(ret => {
                res.send(ret)
            })
        }else{
            res.send({errorMsg:'请传入memberId'})
        }
    })

    ///获取收获详情
    ///addressId 地址_id 必填
    app.get('/wx/address/detail',(req,res) => {
        if(req.query.addressId){
            SQLHelper(`
            select * from address where _id = ${req.query.addressId}
            `).then(ret => {
                res.send(ret.length ? ret[0] : {errorMsg:'未获取到地址详情'})
            })
        }else{
            res.send({errorMsg:'请传入addressId'})
        }
    })

    ///新增收货地址
    ///memberId 用户ID 必填
    ///receiver 收货人 必填
    ///phone 手机号 必填
    ///city 省市区 必填
    ///area 详细地址 非必填
    app.post('/wx/address',(req,res) => {
        if(req.body.receiver &&  req.body.phone && req.body.city){
            SQLHelper(`
            INSERT INTO address(state,memberId,receiver,phone,city,area) 
            VALUES(1,'${req.session.userId}','${req.body.receiver}','${req.body.phone}','${req.body.city}','${req.body.area || ''}')
            `).then(ret => {
                res.send(ret)
            })
        }else{
            res.send({errorMsg:'传入参数错误'})
        }
    })

    ///修改收货地址
    ///addressId 地址_id 必填
    ///receiver 收货人 非必填
    ///phone 手机号 非必填
    ///city 省市区 非必填
    ///area 详细地址 非必填
    app.put('/wx/address',(req,res) => {
        if(req.body.addressId){
            ///需要修改的项
            let updateKey = ['receiver','phone','city','area']
            let updateValues = []
            for(let i = 0; i < updateKey.length; i ++){
                let key = updateKey[i],value = req.body[key]
                if(value) updateValues.push(`${key}='${value}'`)///判断哪些项需要修改
            }
            SQLHelper(`UPDATE address set ${updateValues.join(',')} WHERE _id = ${req.body.addressId}`).then(ret => {
                res.send(ret)
            })
        }else{
            res.send({errorMsg:'传入参数错误'})
        }
    })

    ///修改为默认地址
    ///addressId 主码_id 必填
    ///memberId 用户_id 必填
    ///isDefault 是否默认 非必填
    app.put('/wx/address/default',(req,res) => {
        let addressId = req.body.addressId,memberId = req.session.userId,isDefault = req.body.isDefault == 1 ? 1 : 0
        if(addressId && memberId){
            if(isDefault == 1){///设置默认地址
                ///取消其他默认地址
                SQLHelper(`
                UPDATE address 
                set isDefault = 0 
                WHERE isDefault = 1 AND memberId = ${memberId}
                `).then(ret => {
                    SQLHelper(`
                    UPDATE address 
                    set isDefault = 1 
                    WHERE _id = ${addressId}
                    `).then(ret => {
                        res.send(ret)
                    })
                })
            }else{///取消默认地址
                SQLHelper(`
                UPDATE address 
                set isDefault = 0 
                WHERE _id = ${addressId}
                `).then(ret => {
                    res.send(ret)
                })
            }
        }else{
            res.send({errorMsg:'传入参数错误'})
        }
    })


    ///删除地址 逻辑删除
    ///addressId 主码_id 必填
    app.delete('/wx/address',(req,res) => {
        let addressId = req.body.addressId
        if(addressId){
            SQLHelper(`
            UPDATE address 
            set state = 0 
            WHERE _id = ${addressId}
            `).then(ret => {
                res.send(ret)
            })
        }else{
            res.send({errorMsg:'传入参数错误'})
        }
    })
}